DataView.prototype.setBigUint64()

The setBigUint64() method stores an unsigned 64-bit integer (unsigned long long) value at the specified byte offset from the start of the DataView.

setBigUint64(byteOffset, value)
setBigUint64(byteOffset, value, littleEndian)

byteOffset

The offset, in bytes, from the start of the view to store the data from.

value

The value to set as a BigInt. The highest possible value that fits in an unsigned 64-bit integer is 2n ** 64n - 1n (18446744073709551615n). Upon overflow, it will be zero (0n).

littleEndian

Optional Indicates whether the 64-bit int is stored in little- or big-endian format. If false or undefined, a big-endian value is written.

undefined.

RangeError

Thrown if the byteOffset is set such that it would store beyond the end of the view.

var buffer = new ArrayBuffer(8);
var dataview = new DataView(buffer);
dataview.setBigUint64(0, 3n);
dataview.getBigUint64(0); // 3n

• DataView
• ArrayBuffer
• BigInt